cmake_minimum_required(VERSION 3.8)
project(custom_target)
#add_custom_target(custom_target_1 ALL echo "This message is output when make!")
#add_custom_target(custom_target_1 echo "This message is output when make!")
#add_custom_target(custom_target_1 ALL echo "This message is output when make!" COMMAND echo "This is another message!")
add_custom_target(custom_target_1 ALL echo "This message is output when make!" COMMENT "This is comment!") 
add_executable(custom_target_program main.cpp)
